The Internal Revenue Service Official Site. This is a much improved site and really helpful for the answers you may need from the IRS: Click Here
Tax Forms:
At 1040.com you can download Federal and State tax forms in pdf format Click Here
Answers To Your Tax Questions
Here's a great resource: http://www.asktax.org which is an Internet News Group dedicated to discussion of taxes. Numerous tax professionals participate and the discussions are modreated by a tax pro who keeps the unrelated and offensive comments under control.
Another great site is taxtopic.net: All things tax for individuals and business = Click Here The leading accounting services directory designed to help its users find the specific tax answers, information and more..